Spring-wheel.



A.- w. YOUNGKVIST. SPRING WHEEL.

APPLICATION FILED NOV. 6, 1913.

1 ,1 1 1 ,204 Patented Sept. 22, 1914.

WlTN-ESSES a g I I INVENTOR I W W M ATTORNEY THE NORRIS PETERS CO. PHOTD L|THO WASHINGTON. D. c.

'YOUNGKVIST, a citizen of the United nmnnnus WALFRID YOUNGKVIS-T,

or 'DUL'UTH, MINNESOTA, ASSIGNOR mo, EASY YAUTO WHEEL COMPANY, or LUTH, lviiunnsora. p,

To all whom it may] concern.# I;

Be it known that I, AMANDUs WAnrnn) States, residing at Duluth, in the county of St.

Louis and State of Minnesota, haveinvented certain new and useful Improvements in" Spring-Wheels',of which the following is a v spring wheels.

' The objectof my inventionis to provide an arrangement, whereby theordinary "wheel -is a side View of a sawing a piece therefrom,.as is clearly'shown w 40 in Fig. 1 of the drawings. The shortening specification, reference being had therein to the accompanying drawlng.

My invention "relates to improvements in nowfin use can be readilyhconverted into a spring wheel at a small cost and at the same time have all of the a specially constructed ispring wheel. 1-

Another object of my invention is to pi-o-j vide a simple, cheap and more effective spring wheel which is very durablewinits construction and having certain detailsof. structure hereinafter more fully set forth.

Inthe accompanying drawings lligure 1 portion 0f an 1 ordinary wheel,

adapted to be attached to the ordinary wheel .now in use.

Referring nowto the drawings, 1 represents the hub of the ordinary wheel having the-usual spokes 2, extending toward therim 8, carrying the tire 4:, all oflwhich arefofthe usual'construction and need no furtherdc scription. In applying my, device to a Wheelof this character, it-isonly necess'aryto cut the spokes at the intersection thereofwith the rim 3 and slightly shorten the same by V of the spokes, as will be readily. seen, leaves a space between the end fgof the spokes and the rim 3 of thelIwheel. ;Between therim 3 and the ends of the spokes are placed curvilinear band springs 5, the ends of which are adapted to overlap and are secured to the rim or felly 3, by any suitable or convenient means, such as bolts'6 or a plurality of bolts, as may be desired. These bolts are of such a length that they will pass throu'gh'holes at the ends of the springs 5, and through' the rim or any 3, and are provided with nuts 7 for locking the ends of the springs to the rim or felly. While I have shown I i Specification of Letters Patent. Patented Sept,

Application filedil'ovember 913.

qualifications of I showing invention applied there. to. Fig.2isa perspective view ofmy 'im' proved spring and 'itsjattaching means 22,1 14. Serial No. 799,510.

this manner of attaching the ends of the springs 5' to the rim or felly, it will be understood that this can be varied without departing from my invention v The ends of the spokes 2 are provided with U-shaped sockets 8, which are preferably made of cast-metal and provided with openings 9, through which screws or bolts pass for attaching the sockets to the ends of the'spokes 2. As heretofore stated, the sockets 8' are preferably made of cast-metal and are proyided with lugs or bolts .691. formed'integral with the lower or outer face ;.thereof and arefadapted'to pass through openings in the inner end of the springs 5, as clearly shownin Fig. 2 of the drawings.

on the o'utsideof the springs {iisa washer 10,, and screwed upon the threaded lugs or bolts are nuts/11, which firmly clamp the washerslO against the spring and securely.

lock the springs 5 to theouter face of the sockets '8 to prevent them from oscillating or rotating on the socket. Itis understood that a similar means ofattaching ends of the springs 5to the or felly 3 couldbe employed.

As heretofore stated, the springstl are composed of curvilinear spring bands and, (as shown, are of asymmetrical form and each spring comprises two outwardly facing partly elliptical shaped portions disposed at substantially right angles to two inwardly facing partly elliptical-shaped portions, all comprised of the band and so arranged-that in the event of abnormal pressure coming upon the spring, the adjacent abutting portions of the spring may impinge from being broken By this structure I am enabled to get themaximum resiliency withina given space.

If preferred, *the two Placed uponpthe threaded lug or bolt 6,

against each other and thus prevent the same adjacent inwardly facing partly elliptical-shaped portions may i be rigidly fixed to each other by means of a fillet 12 and-bolt 13, the latter; passing through, the" spring and fillet, as clearly shown, or other suitable means maybe resorted to foruniting such parts. [This latter connection however, would onlybe necessary in the event of power being applied to the axle I of such a wheel, as for-instance, the rear wheels of an automobile where greater rotary resistance is required.

Havingithus described my invention, What I claim and desire to secure by Letters Patent is p spokes, a felly spaced from the ends of the spokes and springs between the ends of the spokes and the felly, the said springs composed of curvilinear spring metal having the center of their sides drawn inwardly A spring wheel comprising a hub and end connected forrning two equal eooperat- 1o mg res lient portions carried bythe spokes and the felly respectively. V p

In testimony whereof lihereunto affix my signature in thepresenee of two Witnesses.

AMANDUS WALFRID YOUNGKVIST,. ,Witnesses: i i H. T. LUNDGHEN,

i'FQ Y. ANDERSON.

Copies of this patent may be obtained for five cents. eech, by eddressing the Commissioner of Patents,

" Washingto1 1,D;G." t i I p 

